Select wrong statement
(A) Gaseous movement within the plant body occurs by means of diffusion only
(B) Porins are chemically proteins
(C) Hydrophilic substances find it easy to pass through the cell membrane
(D) Diffusion in solids rather than of solids is more likely

Diffusion is the only means for gaseous movement within the plant body.

Diffusion is the only means of gaseous movement within plant body

Which ones are ture and false ? (a)Positive hydrostatic pressure is called turgor pressure (b) Wall pressure exerts to prevent the increase of protoplasm size © Diffusion is more repid in liquid than in gases (d) Diffusion of water through a semipermeable membrane is called imbibition (e) Osmosis is movement of substances which takes place along a diffusion gradient

Read the following statements carefully - (A) The lipid component of the plasma membrane mainly consists of phosphoglycerides. (B) Polar molecules can pass through the lipid bilayer of the plasma membrane, therefore they do not require carrier proteins to facilitate their transport. (C ) The secondary wall is capable of growth and it is formed on the outer side of the primary wall. (D) Quasifluid nature of lipid enables the lateral movement of proteins within the overall lipid bilayer of the plasma membrane. (E) Middle lamella glues the different neighbouring cells together. How many statements are incorrect?

Read the following statement (A - D). (A) The movement of air into and out of the lungs is carried out by creating a pressure gradient between the lungs and atmosphere. (B) Inspiration can occur if the pressure within the lungs is more than the atmospheric pressure. (C) Expiration takes place when the intrapulmonary pressure is lesser than the atmospheric pressure. (D) The diaphragm and a specialized set of intercostal muscles in between the ribs help in the generation of such pressure gradients for breathing. How many of the following statements are correct?

Read the given statements each with one or two blanks. Select the option that correctly fills the blanks in any two of the statements.(a) ul((i)) is the process of aerobic burning whereas ul((ii)) is anaerobic burning of combustible constituent of solid waste at high temperature. (b) ul((i)) secretes milky fluid which helps in the mobility of sperms. (c) Tendrils of Passiflora and thorns of Bougainvillea are ul((i)) organs while wings of birds and insects are ul((ii)) organs. (d) ul((i)) controls the coordination of body movements and posture whereas ul((ii)) controls rate of heartbeat.

Assertion :- Diffusion is one of the most important process of plants. Reason:- Diffusion is the only means for gaseous movement within plant body.